ProgressDialog

import android.app.Dialog;
import android.content.Context;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.widget.ProgressBar;
import android.widget.TextView;


/**
 * 进度条对话框
 * 
 * @author zhuojianhai over1
 * 
 */
public class ProgressDialog extends Dialog {


/** 进度条 */
public ProgressBar pb;
/** 完成百分比 */
public TextView left;
/** 完成文件大小 */
public TextView right;
/** 标题 */
public TextView progress_dialog_title;
/** 数量 */
private int max_count = 0;
/** 大小 */
private float max_size = 0L;


private Handler handler = new Handler() {


@Override
public void handleMessage(Message msg) {
// 定义一个Handler，用于处理下载线程与UI间通讯  
if (!Thread.currentThread().isInterrupted()) {
switch (msg.what) {
case 1://正在下载
pb.setProgress(msg.arg1);
left.setText(msg.arg1 + "%");
if (msg.arg1 == pb.getMax()) {
ProgressDialog.this.dismiss();
}
break;
}
}
super.handleMessage(msg);
}
};


protected ProgressDialog(Context context, boolean cancelable, OnCancelListener cancelListener) {
super(context, cancelable, cancelListener);
init();
}


public ProgressDialog(Context context) {
super(context);
init();
}


public ProgressDialog(Context context, int theme) {
super(context, theme);
init();
}


/**
* 数量
* 
* @param count
*/
public void setMaxCount(int count) {
max_count = count;
}


/**
* 大小
* 
* @param size
*/
public void setMaxSize(float size) {
max_size = size;
}


private void init() {
this.setCancelable(false);
this.setTitle("正在下载");
setContentView(R.layout.download_progress);
pb = (ProgressBar) findViewById(R.id.down_pb);
left = (TextView) findViewById(R.id.leftText);
right = (TextView) findViewById(R.id.rightText);
right.setVisibility(View.INVISIBLE);
progress_dialog_title = (TextView) findViewById(R.id.progress_dialog_msg);
pb.setMax(100);//100%
currentIndex = 0;
}


private int currentIndex = 0;


/**
* 刷新下载
*/
public void refresh_next() {
Message msg = new Message();
msg.what = 1;
++currentIndex;
msg.arg1 = (int) ((1.0F * currentIndex / max_count) * 100);
handler.sendMessage(msg);
}
}